One vertex per element, one color per generator, with an edge from x to x·s.
(5,6)(7,8)(9,10)(11,22)(12,20)(13,18)(14,17)(15,21)(16,23)(19,24) involution — undirected(1,2)(3,4)(5,6)(7,8)(9,11,15,13)(10,16,21,19)(12,23,14,24)(17,22,20,18)(6,8)(9,12,15,14)(10,17,21,20)(11,23,13,24)(16,22,19,18)(2,4)(6,8)(9,11,15,13)(10,18,21,22)(12,24,14,23)(16,17,19,20)(9,13,15,11)(10,19,21,16)(12,24,14,23)(17,18,20,22)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.